[PATCH] EISA: tidy-up driver_register() return value

Remove the assumption that driver_register() returns the number of devices
bound to the driver.  In fact, it returns zero for success or a negative
error value.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/eisa/eisa-bus.c

@@ -135,13 +135,8 @@ struct bus_type eisa_bus_type = {
 
 int eisa_driver_register (struct eisa_driver *edrv)
 {
-	int r;
-
 	edrv->driver.bus = &eisa_bus_type;
-	if ((r = driver_register (&edrv->driver)) < 0)
-		return r;
-
-	return 0;
+	return driver_register (&edrv->driver);
 }
 
 void eisa_driver_unregister (struct eisa_driver *edrv)

drivers/net/3c59x.c

@@ -1096,14 +1096,18 @@ static int __init vortex_eisa_init (void)
 	int orig_cards_found = vortex_cards_found;
 
 #ifdef CONFIG_EISA
-	if (eisa_driver_register (&vortex_eisa_driver) >= 0) {
-			/* Because of the way EISA bus is probed, we cannot assume
-			 * any device have been found when we exit from
-			 * eisa_driver_register (the bus root driver may not be
-			 * initialized yet). So we blindly assume something was
-			 * found, and let the sysfs magic happend... */
-
-			eisa_found = 1;
+	int err;
+
+	err = eisa_driver_register (&vortex_eisa_driver);
+	if (!err) {
+		/*
+		 * Because of the way EISA bus is probed, we cannot assume
+		 * any device have been found when we exit from
+		 * eisa_driver_register (the bus root driver may not be
+		 * initialized yet). So we blindly assume something was
+		 * found, and let the sysfs magic happend...
+		 */
+		eisa_found = 1;
 	}
 #endif
 

drivers/net/dgrs.c

@@ -1551,7 +1551,7 @@ MODULE_PARM_DESC(nicmode, "Digi RightSwitch operating mode (1: switch, 2: multi-
 static int __init dgrs_init_module (void)
 {
 	int	i;
-	int	cardcount = 0;
+	int	err;
 
 	/*
 	 *	Command line variable overrides
@@ -1593,13 +1593,13 @@ static int __init dgrs_init_module (void)
 	 *	Find and configure all the cards
 	 */
 #ifdef CONFIG_EISA
-	cardcount = eisa_driver_register(&dgrs_eisa_driver);
-	if (cardcount < 0)
-		return cardcount;
+	err = eisa_driver_register(&dgrs_eisa_driver);
+	if (err)
+		return err;
 #endif
-	cardcount = pci_register_driver(&dgrs_pci_driver);
-	if (cardcount)
-		return cardcount;
+	err = pci_register_driver(&dgrs_pci_driver);
+	if (err)
+		return err;
 	return 0;
 }